ARDININGSIH, SURYATIN. PENSA E-JURNAL: PENDIDIKAN SAINS, [S. l.], v. 4, n. 03, 2016. DOI: 10.26740/pensa.v4i03.15392. Disponível em: https://ejournal.unesa.ac.id/index.php/pensa/article/view/15392. Acesso em: 14 dec. 2025.